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  <title>DB2 Usage Notes</title>
  <link rel="stylesheet" type="text/css" href="../mbgstyle.css" />
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<h1>DB2 Usage Notes</h1>
<h2>LONG VARCHAR Fields</h2>
<p>By default MyBatis Generator will map LONG VARCHAR fields to the <code>java.lang.String</code> data type,
and will mark these fields as <code>jdbcType="LONGVARCHAR"</code>.  This
mapping will cause errors when retrieving data from DB2.  DB2 LONG VARCHAR fields should be mapped
to the <code>java.lang.String</code> data type with <code>jdbcType="VARCHAR"</code>.  To overcome
this problem, use a <code>&lt;columnOverride&gt;</code> as follows:</p>
<pre>
  &lt;table schema="DB2ADMIN" tableName="ALLTYPES" &gt;
    &lt;columnOverride column="LONG_VARCHAR_FIELD" javaType="java.lang.String" jdbcType="VARCHAR" /&gt;
  &lt;/table&gt;
</pre>
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